A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it.
A mountain range (mountain chain, mountain belt) is a geographic area with many mountains. A 'mountain system' or 'system of mountain ranges' includes geological features that are in the same region as a mountain range.Mountain ranges usually include highlands or mountain passes and valleys.Individual mountains in the same range do not always have the same geology or petrology.ountain ranges outside of these two systems include the Arctic Cordillera, the world's northernmost mountain system. If the definition of a mountain range includes underwater mountains, then the ocean ridges form the longest continuous mountain system on Earth, with a length of 65,000 kilometres (40,400 mi).
Mountain Definition. A mountain is a natural elevation of the earthâs surface rising more or less abruptly to a summit, and attaining an altitude greater than that of a hill, usually greater than 2000 ft. Related to Mountain: Pyramidal Peak, Mountain Ranges, Mountain Pass.he most common way a mountain is formed is through plate tectonics. The Earth has massive plates that float. These plates can move under and over each other. When one plate moves under another the plate, the other plate rises up to form a mountain. After thousands of years, they mountains can get very high.